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Lab talk, the good, the bad, and the ugly
Metal
laser welding woes...
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<blockquote data-quote="adamb4321" data-source="post: 156447" data-attributes="member: 838"><p>I'm doing a cast implant beam for a client that decided he wanted it NP. I ordered some Cr/Co alloy from Bredent. All cast well, albeit apart from a slight rock.</p><p></p><p>I sectioned and laser welded back together which is were the fun started.</p><p></p><p>I always tack together on opposing quadrants, then seam weld on opposing quadrants and finally fill in with wire on opposing quadrants. This normally works very well and produces a strong weld and minimises distortion.</p><p></p><p>Yesterday I spent most of the morning and some of the afternoon welding and then re-sectioning and then re-welding again. Every time the beam has distorted really badly. It keeps warping upwards, welding on the opposite side to the warp should reverse the warp but on this beam once it starts moving in a direction nothing seems to stop it. After 5 hrs or so I've got it to a reasonable fit but it's still not as I'd like. Any suggestions as to whats happening?</p></blockquote><p></p>
[QUOTE="adamb4321, post: 156447, member: 838"] I'm doing a cast implant beam for a client that decided he wanted it NP. I ordered some Cr/Co alloy from Bredent. All cast well, albeit apart from a slight rock. I sectioned and laser welded back together which is were the fun started. I always tack together on opposing quadrants, then seam weld on opposing quadrants and finally fill in with wire on opposing quadrants. This normally works very well and produces a strong weld and minimises distortion. Yesterday I spent most of the morning and some of the afternoon welding and then re-sectioning and then re-welding again. Every time the beam has distorted really badly. It keeps warping upwards, welding on the opposite side to the warp should reverse the warp but on this beam once it starts moving in a direction nothing seems to stop it. After 5 hrs or so I've got it to a reasonable fit but it's still not as I'd like. Any suggestions as to whats happening? [/QUOTE]
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Lab talk, the good, the bad, and the ugly
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laser welding woes...
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